Magneto mounting and connection



Oct. 4, 1932.

C. F. RElS MAGNETO MOUNTING AND CONNEC Filed July 2, 1950 TION MINIMUM min (Summer Redo Gtforneg! Patented Oct. 4, 1932 UNITED STATES PATEN'F OFFICE cunr rnnmamcx REIS, or CHICAGO, ILLINOIS, ASSIGNOR' T EXCEL MAGNETO COMPANY, or CHICAGO, ILLINOIS MAGNETO MOUNTING ANID CONNECTION Application filed July 2, 1930. Serial No. 465,439.

This invention relates to internal combus tion engines and especially those of the Diesel type in which the fuel is injected into the cylinders and ignited by compression rather than by an electric spark as is common in the more conventional types of internal combustion engines.

Considerable difficulty is encountered in starting the Diesel type of engine by reason of the high pressures necessary to ignite the cylinder charge, and it has been attempted to overcome this 'difliculty by employing an electric circuit and conventional spark plugs to start the engine and thereafter shutting off the current. Such prior devices have been objectionable because uneconomical and for various other reasons which need not be enumerated herein.

An object of the present invention resides in the provision of a movably mounted generator which may be moved into operative relation with a Diesel engine when the latter is to be started and thereafter moved to an inoperative and inactive position.

Another obj ect of the invention consists in providing in combination with a Diesel engine and a mo'vably mounted magneto, a coupling which isso designed as to permit the coupling of the magneto shaft with the engine at only one position relative to the gearing of the engine, thereby providing for the proper timing of the ignition system.

Other objects and advantages of the invention will be apparent from the following description when taken in connection with the accompanying drawing, in which Figure 1 is a more or less diagrammatic representation of a Diesel engine in combinationwith a slidably mounted magneto and a suitable coupling between them. Figure 2 is a horizontal sectional view through the magneto mounting, looking in the direction of thearrows.

Figure 3 is a detail perspective View of the two members of the coupling; and

Figure 4 is an end view of one of the coupling members.

Referring to the drawing in more detail the numeral 1 indicates generally an internal combustion engine of the high compression or Diesel type, the timing gear for which is indicated generally by the numeral 2.

Mounted on one side of the engine body or in any other position adjacent the timing mechanism 2 is a bracket 3 anchored to the engine by means of bolts 4. This bracket in the embodiment here shown is provided with four slots 5 adapted to receive bolts 6 which are passed up from the underside of the bracket and fixed in a plate 7 secured to a magneto 8'. It will be obvious, therefore, that the magneto may be moved longitudinally of the bracket 3 a distance equivalent to the difference between the length of the slots and the diameters of the bolts 6.

The magneto 8 is of any preferred construction and provided with a rotor shaft 9. To the outer end of shaft 9, i. e. the end adj-acent the timing gear 2, is secured a coupling member 10 consisting of a socket portion 11 which is directly connected to the shaft 9 and a disc portion 12 provided with a plurality of recesses13 and 14; there being indicated in the drawing three recesses 13 of rectangular formation and a single recess 14: of cylindrical formation.

On the shaft 15 of the engine timing gear 2 is secured a complementary coupling member 16 comprising a socket portion 17 fixed to the shaft 15 and a disc portion 18. The face of the disc portion 18 is provided with a plurality of lugs 19 and 20; there being three lugs 19 of a shape corresponding to the recesses 13 in disc 12, and a cylindrical lug. 20 corresponding tothe recess 14 in disc 12. It will thus be apparent that the coupling or clutch members 10 and 16 can only be engag-ed when the cylindrical lug 20 is in alignment'withthe cylindrical recess 14. By this arrangement it will be obvious that the shafts 9' and 15 are always in the same relative angular positions when the coupling members 10 and 16 are in operative engagement.

I As statedhereinbefore, one of the primary objects of the present invention is to provide a magneto. in conjunction with an internal combustion engine which may be uncoupled from the operating parts of the internal combustion engine after the engine is started, and remain idle until such time as it is again desired tostart the engine. For the purpose of uncoupling or throwing out of Operation the magneto, any preferred mechanism may be employed to slide the same on its mounting 6 in adirection to disengage the coupling members 10 and 16. In the present embodiment of the invention I have provided a boss 21 on a side of'the magnetocasing to which is connecteda link 22. This link has its oppositeendconnected-to one arm'of a bell crank. lever 23 suitably mounted. on. the. vehicle structure'or other structure with which the engine is associated. The'other-arm ofthis hell crank may be connected with a link 24 which is in turn connected with a bell crank lever 25 operable from-.thefdash or other convenient point by m'eansof a pull rod 26. It will thus be apparent thatby the simple operation of the plunger 26the rotor shaft of the magneto may he engaged with or disengaged from the timing shaft 15 of the engine. Itis'essenti'ahfof course, that each time the 'roto'r'of the magneto is connected with the timing shaft ofthe engine the same relative positions of the" two'shafts are main tained in order to retain the proper timing the apparatus, it is desirable'that the coupling members he engaged at a plurality of points. It is for this reason that three lugs and recesses of identical construction are shown and a single lug and recess of a difi'erent constructlon are employed. It is to be, understood, however, that a greater or fewer num ber of theselugs and recesses may be em- 7 ployed as desired. I

it Will be' apparent to those skilled in the art that I have'provided amounting for magnetos and a releasable coupling between the rotor shaft thereof and the timing gear of an internal combustion engine; that the mounting is so designed asto permit of a relative movement between the magneto and the timing shaft of the engine so as to engage or disengagethe coupling between these shafts; that means are provided for readilymoving the magneto to operative and inoperative po fsitions; and that the coupling is so designed as to maintain at all times the proper relative angular positions offlthe rotor shaft and the engine timing shaft when the coupling members are operatively connected, thereby insuring the proper timing of the sparks for [From the foregoing description taken in connection with the accompanying drawing,

the various cylinders whenever the magneto 1s coupled to the timing shaft.

In accordancewith the patent statutes I have described what I now believe to be the preferred form of-the invention, but inasmuch as various minor changes may be'made in" the details of construction without-departing fromthe essence of the invention it is intended that all such changes be included within the scope of the appended. claims.

What I claim as new is: r

1, In an internal combustion engine, a movably-mounted magneto, a coupling between the magneto' shaft and the engine gearing, said coupling being constructed and arranged to cause said shaft to assume the same angular relation'to the engine gearing when coupled thereto, and means for moving said magneto to coupling. and

uncoupling positions. A i i i 2. In an internal'combustion engine, a movably mounted magneto, a coupling member fixed to the magneto shaft, a coupling member fixed to the timing gear of the engine, complementary lugs and recesses formed on the respective coupling members, said lugs and recesses being so designed as to cause them to assume the same relative angular positlon when engaged, and means'for m-oving said magneto to cause the engagement or disengagement ofsaid members. 3. In an lnternal combustion engine, a slotted bracket mounted thereon, a'magneto slidably mounted on said bracket through en- I gagement with said slots, a' releasable ,cou

arm

pling between said magneto and the timing gear of the engine, and means for moving said magneto to release or engage said cou- 4. Means for releasably connecting the rotor shaft of a magneto with the timing shaft of an engine, said means comprising a disc fixedly secured to each of said shafts, a plurality of lugs formed on the face of one of said discs, one of said lugs being of an odd shape, the other disc provided with a complementary series of recessesto receive said lugs, and meansfor causing airelative movement between said discs to ,causetheir engagement ordisengagement.

cunr FREDERICKREIS.

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